Open the Data Resource: https://datahub.chesapeakebay.net

The DataHub is the Chesapeake Bay Program’s primary tool for searching and downloading environmental data for the Chesapeake Bay watershed. It provides access to several types of data related to the Chesapeake Bay. Databases can be queried by geographic region and date range, and queries result in downloadable, tab- or comma-delimited text files that can be imported to any program (e.g., SAS, Excel, Access) for further analysis. Databases include:

Water Quality: Water quality and calculated physical and nutrient parameters. Living Resources: Tidal plankton (phytoplankton, picoplankton, mesozooplankton and microzooplankton), tidal benthic invertebrates (counts, biomass, sediment, water quality and indicator metrics) and nontidal benthic invertebrates (counts, water quality, habitat and indicator metrics). Fluorescence Data: Fluorescence, chlorophyll a, phytoplankton, and vertical and horizontal profiles. Toxics: Physical and nutrient parameters.

Geospatial collaboratives are inherently multi-organizational. When organizations integrate their geospatial infrastructure, they can quickly and easily interconnect across borders, jurisdictions, and sectors to address shared challenges. The term ‘OneMap’ is a placeholder for your community GIS branding. Whether you call your initiative a Spatial Data Infrastructure (SDI), Open Data, Digital Twin, Knowledge Infrastructure, Digital Ecosystem, distributed GIS, or otherwise, collaboration is key.

View Hub ExamplesExplore the Essential Guides for 'OneMap' AdministratorsGet the 'OneMap' ArcGIS Hub template

The 'OneMap' concept is multi-organizational. The website is designed to help communities of practice integrate your geospatial infrastructure (modern SDI). Use it to foster sharing of data among partners; provide a focus on thematic topics and foundational data; and reciprocate value with your contributing partners.

This item is available to ArcGIS Hub Basic and Premium licensed organizations.

The Commission Districts dataset is a spatial data representation of the five districts of City of Miami, originally created by the City Clerk's Office, City of Miami. Each district is administered by a commissioner, which is elected every four years. The data layer is maintained and managed by the GIS Team of the City of Miami.

DO NOT DELETE OR MODIFY THIS ITEM. This item is managed by the ArcGIS Hub application. To make changes to this site, please visit https://hub.arcgis.com/admin/

Road centerlines for Johnson City, TN and the surrounding counties.

Description: Boundaries map services shows administrative, physical, and natural boundaries in Westchester County. Data layers include municipal boundaries, electoral districts, and school districts among others.

This web map presents a vector basemap of OpenStreetMap (OSM) data hosted by Esri. Esri created this vector tile basemap from the Daylight map distribution of OSM data, which is supported by Facebook and supplemented with additional data from Microsoft. This version of the map is rendered using OSM cartography. The OSM Daylight map will be updated every month with the latest version of OSM Daylight data.OpenStreetMap is an open collaborative project to create a free editable map of the world. Volunteers gather location data using GPS, local knowledge, and other free sources of information and upload it. The resulting free map can be viewed and downloaded from the OpenStreetMap site:www.OpenStreetMap.org. Esri is a supporter of the OSM project and is excited to make this enhanced vector basemap available to the ArcGIS user and developer communities.

This data depicts terrestrial aerial fire retardant avoidance areas delivered as part of the 2011 Nationwide Aerial Application of Fire Retardant on National Forest System Land Environmental Impact Statement, the 2023 Supplemental Environmental Impact Statement, and the 2024 Record of Decision. This data shows areas, provided by each National Forest, where the aerial application of fire retardant should be avoided in order to prevent the potential of impacts to Federally listed threatened or endangered species as identified through consultation, or Forest Service sensitive species.This data is to be used in planning and implementation phases of U.S. Forest Service fire activities to help prevent intrusions of aerial fire retardant in known areas of TEPCS (Threatened, Endangered, Proposed, Candidate, Sensitive) species throughout National Forest lands. Provided here is a National merged dataset derived from each National Forest contribution. This data has been merged, dissolved, and erased of attributes contained in each original component dataset. For this purpose, specific attributes are not necessary, as any spatial areas depicted simply show areas where aerial fire retardant use is to be avoided as stated in U.S. Forest Service guidelines.

DO NOT DELETE OR MODIFY THIS ITEM. This item is managed by the ArcGIS Hub application. To make changes to this site, please visit https://hub.arcgis.com/admin/sites/new

DO NOT DELETE OR MODIFY THIS ITEM. This item is managed by the ArcGIS Hub application. To make changes to this site, please visit https://hub.arcgis.com/admin/

This map features a detailed reference layer for the world that is overlaid on imagery. The map is intended to support the ArcGIS Online basemap gallery. For more details on the map, please visit the Hybrid Reference Layer and World Imagery .

This digital geographic dataset contains polygon features outlining the areas identified as potentially affected by developments of regional impact (large developments) and usually subject to additional regulations and overview by regional planning councils. For more information, contact the Planning Department of the City of Miami.

DO NOT DELETE OR MODIFY THIS ITEM. This item is managed by the ArcGIS Hub application. To make changes to this site, please visit https://hub.arcgis.com/admin/sites/new

Future Land Use dataset represents a large number of polygon features that are catagrized into 13 land use types that are shaped according to various economic and other uses (examples are: Single-Family, Medium-density; Two-Family; Airposrts; Office Buildings; Parking Lots, etc.) within the limit of the City of Miami. The data was created by Planning and Zoning Department while it is maintained and managed by the GIS Team of the City.

This dataset contains points for fire stations that were initially identified from DC Fire and EMS Department records and heads-up digitized from 2002 orthophotographs, and have been updated based on current conditions.

This map provides a detailed basemap for the world featuring a custom navigation map style. The map is intended to support the ArcGIS Online basemap gallery. For more details on the map, please visit the World Navigation Map.

The Code Enforcement Zones dataset is a spatial data representation of the 40 Code Enforcement Zones of City of Miami. The data was created by Code Enforcement Department (used to operate as part of Neighborhood Enhancement Team or NET before December 2003), City of Miami. It is maintained and managed by the GIS Team of the City of Miami.

Information provided by the Washington Metropolitan Area Transportation Authority (WMATA) identified Park N Ride locations.

This layer considers jobs and destinations to be accessible by bike if the destinations are reachable within 30 minutes. Access to jobs and destinations within a fixed time is measured using the actual networks and not a straight line distance. Destinations include grocery stores, hospitals, community services, education centers, and other significant community areas. Jobs across the region (not just within the District) were used to provide a full picture of employment access.

The Office of the Chief Technology Officer (OCTO), within the District of Columbia (DC) government, manages the District’s data program. This includes open data, data curation, data integration, data storage, data science, data application development and Geographic Information Systems (GIS). The open data handbook explains the process and steps OCTO undertakes when an agency submits an open dataset for publication. The handbook outlines dataset rules, documentation requirements, and policies to make data consistent and standardized. This applies to any dataset submitted for publication on the Open Data DC portal that is classified as Level 0: Open as defined in the District’s Data Policy. For previous versions of the handbook visit https://opendata.dc.gov/pages/handbook.